Water-Container.cpp

class Solution {
public:
    int maxArea(vector<int>& height) {
        
        int i=0;
        int j=height.size()-1;
        int mx=-1;
        
        while(i<j) {
            mx=max(mx,min(height[j],height[i])*(j-i));  //formula to calculate area -> min(height[j],height[i])*(j-i)
            if(height[i]<height[j])
                i++;
            else
                j--;
        }
        return mx;
    }
};